*{
    margin: 0;
    padding: 0;
}
body{
    margin:0px;
    padding:0px;
    font-family:sans-serif;
}
.control{
    position:absolute;
    top:50%;
    left:70%;
    transform:translate(-50%,-50%);
    /*实现块元素百分比下居中*/
    width:400px;
    padding:50px;
    background: rgba(0,0,0,.6);
    box-sizing:border-box;
    box-shadow: 0px 15px 20px rgba(0,0,0,.3);
    border-radius:15px;
}
.item{
    width: 330px;
    height: 60px;
    background: rgba(0,0,0,.15);
}
.item div{
    width: 110px;
    height: 60px;
    display: inline-block;
    color: white;
    font-size: 18px;
    text-align: center;
    line-height: 60px;
    cursor: pointer;
}
.content{
    width: 100%;
}
.content div{
    margin: 20px 30px;
    display: none;
    text-align: left;
}
p{
    color: #4a4a4a;
    margin-top: 30px;
    margin-bottom: 6px;
    font-size: 15px;
}
.content input[type="text"], .content input[type="password"]{
    width: 100%;
    padding:10px 0;
    font-size:16px;
    color:#fff;
    letter-spacing: 1px;
    margin-bottom: 30px;
    border:none;
    border-bottom: 1px solid #fff;
    outline:none;
    background: transparent;
}
.content input[type="submit"]{
    background: transparent;
    border:none;
    outline:none;
    font-size: 16px;
    color:white;
    background: black ;
    padding:15px 20px;
    cursor: pointer;
    border-radius:10px;
}
.nc-container{
    top:55px;
    left:88px;
}
.content label{
    position:absolute;
    top:0px;
    left:0px;
    padding:10px 0;
    font-size: 16px;
    color:#fff;
    pointer-events:none;
    transition:.5s;
}
.content input[type="text"]:focus ~ label,
.content input[type="text"]:valid ~ label
{
    top:-18px;
    left:0;
    color:#03a9f4;
    font-size:14px;
}
.content select{
    background: transparent;
    border:none;
    outline:none;
    font-size: 16px;
    color:white;
    background: rgba(0,0,0,.5);
    padding:15px 20px;
    cursor: pointer;
    border-radius:10px;
}
.content button[type="button"]{
    background: transparent;
    border:none;
    outline:none;
    font-size: 16px;
    color:white;
    background: rgba(0,0,0,.5);
    padding:15px 20px;
    cursor: pointer;
    border-radius:10px;
}.content button[type="hh"]{
     border:none;
     width: 50px;
     height: 40px;
     background: rgba(0,0,0,0);

 }
.content button[id="bottom-text"]{
    border:none;
    height: 40px;
    width: 220px;
    background: rgba(0,0,0,0);

}
.active{
    background: rgba(0,0,0,.5);
    box-shadow: 0px 4px 8px rgba(0,0,0,.2);
    color:white;
    cursor: pointer;
}
.item div:hover{
    background: rgba(0,0,0,.8);
    box-shadow: 0px 4px 8px rgba(0,0,0,.1);
    color:white;
    cursor: pointer;
}

.box{
    position:absolute;
    top:50%;
    left:25%;
    transform:translate(-50%,-50%);
    /*实现块元素百分比下居中*/
    width:400px;
    padding:50px;
    background: rgba(0,0,0,.6);
    box-sizing:border-box;
    box-shadow: 0px 15px 20px rgba(0,0,0,.3);
    border-radius:15px;
}

